Just a reply to Alex Deucher since
his comments section is disabled and there's no contact info on his
page:
( Hint, if you need to register with his wordpress to leave comments,
and he has registration turned off, but comments enabled, that means it
sucks and I really dislike it. Please stop that kind of thing, it's
really annoying.)

1: Multiple instances. ctrl-click to launch a new instance.

2: Restart/shutdown/hibernate: Either alt-click the menu, or use the
Gnome Shell Exensions to
bring it back: